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Naval Postgraduate School
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This thesis represents an initial effort to define the characteristics of a command, control, and communications (C3) architecture. It provides a basic understanding of the command and control process, command, control and communications architecture, and command, control and communications system analyzed from the point of view of an information system. The ultimate goal of this thesis is to introduce the basic concepts of C2 process, C3 architecture and C3 system to the Argentine Army.
Topics: Command and control systems, Communications, Military
Naval Postgraduate School
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This thesis project included a literature survey of biological and artificial neural network research followed by development and testing of high- order and image recognition hierarchical neural network algorithms. Following training, performance testing of second-order and third-order networks yielded maximum accuracies comparable to those achieved by multilayer perceptron classifiers operating on test data sets. Several versions of an image classification algorithm were tested for learning...
This thesis describes a CAD compatible circuit model for an inductive strip with finite metal thickness centered in finline with wb=1. Scattering coefficients predicted by the circuit model are in good agreement with those predicted by an electromagnetic model based on Maxwell's equations. Filter simulations using the circuit model predict responses which are in good agreement with laboratory measurements.
Topics: Electrical engineering, Electronics, Computer-aided design.
The MUSTANG instrument was calibrated using standard techniques to determine the sensitivity and wavelength calibrations and field of view. The instrument was launched aboard a NASA sounding rocket on March 30, 1990. Post- flight tests indicated that the calibration did not change as a result of the rocket experiment. Ultraviolet dayglow spectra of the Earth's ionosphere were obtained from approximately 100 km to 320 km in altitude over a wavelength range of 1800 A to 3400 A. The spectra were...
Topics: Ebert-Fastie Spectrograph, ultraviolet spectra, dayglow, OII 2770 ΩA multiplet, OI 2972 ΩA...
This research examined the grammar structure of descriptive English captions on multimedia data. The research was composed of three phases. The first phase was to investigate the grammar structure of example descriptive captions from a variety of subject domains. The second phase was to develop a set of domain independent binary grammar rules to be used in the Caption-Based Interface (CBI) which is a natural language interface for the Multimedia Database System. The third phase of the research...
Topics: Natural language processing (Computer science), Natural language processing, multimedia database...
Naval Postgraduate School
by Stone, Mark L.
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Aircraft carriers are and will continue to be highly important to the United States as she safeguards her interests globally. Today's budget environment, however, demands efficient use of these carrier assets in meeting their station coverage assignments. In a peacetime environment, a carrier's ability to cover a station is constrained by depot maintenance, training cycles, and the Chief of Naval Operations personnel and operating tempo program (PERSTEMPO OPTEMPO). To aid in satisfying this...
Topics: Operations research, Modeling, Carrier, Optimization, Deployment Model
Naval Postgraduate School
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An experiment by the Naval Postgraduate School and the National Data Buoy Center was performed in the Gulf of Mexico to investigate the underwater sound generated by heavy precipitation under a variety of conditons. During the first stage of the experiment, nine data sets were obtained with rainfall rates up to 300 mm/hr. The characteristic fifteen kilohertz peak in the underwater sound spectrum generated by small raindrops in light rain is absent during heavy rain. These data sets show a good...
Topics: Rainfall rate, Underwater sound Spectrum, Sonogram
Naval Postgraduate School
by Thornton, Paul D.
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Currently, to plan chemical weapons' use on the battlefield, planners use the classified chemical weapon effects tables contained in FM 3-10B and look up the expected casualties based on the meteorological and target conditions. This can be a lengthy and time-consuming process especially when many weapons are available andor many targets are under consideration. Mathematical models could significantly improve both the speed and accuracy of the current procedure and thus allow chemical weapons...
Topics: Mathematical models, Chemical warfare., Chemical Casualties, Chemical Warfare, Regression, CHEMCAS
Naval Postgraduate School
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This thesis describes a CAD-compatible circuit model for an infinitesimally thin inductive strip centered in homogeneous finline for 0.1 less than or equal to w over b less than or equal to 1.0. The model is shown to predict scattering data which agrees with data computed using the spectral domain method. Results were generated for strips of length T greater than or equal to 10 mils in X-band. By applying the scaling principle, the model is valid for any waveguide band over the normal frequency...
Topics: Electrical engineering., Finline, Discontinuity, Inductive, Strip
This thesis compares the four Intermediate Service Colleges (ISC) and the Defense Intelligence College (DIC) Phase I Joint Professional Military Education (JPME) curricula and student and faculty mixes. It asks the question, 'Is it feasible to offer a Phase I JPME curriculum at the Naval Postgraduate School?' The results clearly show that a Phase I JPME program is feasible if established within the National Security Affairs/Intelligence (NSA/I) and the Joint Command, Control and Communications...
Topics: Military education,Curricula,United States., Joint Professional Military Education (JPME)
The problem examined in this thesis is whether the current structure for the command and control of combat service support for Army special operations forces (ARSOF) is adequate for all ARSOF support units. This thesis is focused on the internal sustainment of ARSOF during contingency operations. The objective of this thesis is to conduct a comparative analysis of three alternative ARSOF support command and control structures to the support structure for the infantry division (light) to...
Topics: ARSOF, Army Special Operations Forces, CSS, Combat Services Support, Infantry, Logistics, SOSCOM,...
This thesis is an evaluation of the performance of a tactical route decision aid model that was developed by CPT Charles Shaw in this 1989 Master's thesis. The decision aid was developed as a module inside the Condensed Army Mobility Management Model (CAMMS). The decision aid selects tactical route based upon a complex methodology which considers a number of variables in the tactical situation and the time available. The Janus(A) high resolution combat model was chosen to compare the routes...
Topics: Operations research, Modeling., CAMMS/SHAW, Tactical Optimum Path
This thesis seeks to determine if US Army Defense Artillery (ADA) units positioned in a belt defense perform better than the point defense that the US Army currently uses. It does this through a comparison of three ADA defense strategies: (1) Forward Concentration (belt defense); (2) Balanced Concentration (point defense); and (3) Rear Area Concentration (point defense). The Joint Theater Level Simulation, a computer combat simulation model, is used as a tool for analysis to compare the three...
Topics: Operations research, Strategy., JTLS, ADA strategy, point defense, belt defense
Prediction of ionospheric propagation in polar regions tends to be difficult because of an increased number and variety of local ionospheric disturbances. Various programs have been developed to model ionospheric propagation, and one such program, IONCAP-PC 2.5, is tested for accuracy over a transpolar communications link, using noncentric measured reference data obtained from the Univercity of Leicester. The field strength values predicted by IONCAP-PC 2.5 are extended to take into...
Topics: Electrical engineering, Ionosphere., High Frequency (HF), Ionospheric Propagation
Progress in computers during the past two decades has sparked the development of many useful high frequency (HF) ionospheric propagation prediction codes. The high-latitude (polar) ionosphere still remains as the most difficult propagation region to predict. A 'Non centric database of collected high-latitude signal and noise measurements was obtained during 1988 and 1989 by the University of Leicester, UK The Advanced Prophet 4.0 HF Ionospheric Propagation Prediction Code was exercised and...
Topics: Electrical engineering, Computer programming, Radio frequency, Communication., High Frequency (HF),...
Naval Postgraduate School
by Lundeen, Gregory N.
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U.S. Naval operations in the Arctic require an effective way to predict the movement and behavior of sea ice. This is currently provided by the Navy's PIPS model which is based on Hibler's (1979) sea ice model which combines the thermodynamic ice heat budget with a dynamic ice model sensitive to the effects of ice thickness and ice strength. The PIPS model simultaneously solves a system of four equations of ice momentum balance, ice rheology, ice thickness, and ice strength. In order to test...
Topics: Buoys, Sea ice., PIPS, Sea Ice, Arctic Buoys, Ice Forecast, Arctic
Naval Postgraduate School
by Beedenbender, Mark G.
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A widely used access control mechanism is the password. Passwords are normally composed of a meaningful detail, such as a name of a person or a sequence of numbers such as birthdate. Any person attempting to gain unauthorized access to a system might need only to look at a personnel record or associate with the person holding the desired password in order to discover the password. Therefore, there is a compromise between user memorability and security of a system. Exploration into other methods...
Topics: Computer security, Data protection., Information system security, authentication, user...
This thesis calculates and compares the marginal cost of graduating a naval officer from the United States Naval Academy (USNA), Naval Reserve Officers Training Corps (NROTC), and Officer Candidate School (OCS). After defining the variable and fixed cost functions for each commissioning source, the total cost, average cost, and marginal cost per graduate are calculated for fiscal year 1989 graduates. Compared to average cost, the marginal cost per Academy graduate is more in line with the...
Topics: Calculates and compares the marginal cost of graduating a Naval officer from the United States...
Naval Postgraduate School
by Shin, In Sub
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This thesis provides guidelines to develop a C3 system, including both organizational and physical systems. It contains the concept, architecture, design and engineering approaches, the integrated C3 framework, test and evaluation methodologies, system acquisition procedures, system development constraints and environment, and C3 research trends. This thesis is mainly descriptive and is comprehensive to help beginners in the C3 research area. It will give a fundamental understanding about the...
Topics: Command and control systems, Decision making, Communications, Military, Military art and science,...
Naval Postgraduate School
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A numerical investigation of two-dimensional natural convection flow and heat transfer from a substrate-mounted flush heat source immersed in a liquid-filled square enclosure was conducted. The study is relevant to direct liquid-immersion cooling of electronic-components. A control volume based finite-difference model that accounts for conduction heat transfer within the substrate and heat source and the coupled natural convection in the fluid was utilized. Numerical predictions were obtained...
Topics: Heat,Transmission, Fluid mechanics., Electronic Cooling, Liquid Immersion, Natural Convection,...
Naval Postgraduate School
by Pardue, Phillip C.
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The thesis describes an analysis of a Magnetic Anomaly Detection (MAD) buoy field. The analysis was based on estimates of the probability a submarine would be detected during an encounter with MAD buoy. The estimates were determined by using a simulation of both a crosscorrelation detection system and square law detection system. Using estimates, a random search model was used to determine a lower bound on the search effectiveness of a MAD buoy field. In doing this, the effects of false alarm...
Topics: Magnetic anomaly detection, MAD, detection models, search models, MAD buoy
Naval Postgraduate School
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This thesis compares the efficiency of a constraint branch-and-bound method against the conventional variable branch-and-bound method in solving set partitioning problems. Because of the difficulties encountered in writing the constraint branch-and-bound subroutine, it was necessary to solve each subproblem encountered from scratch. This is in contrast to the variable branching code which, when solving closely related subproblems, essentially starts from an advanced starting solution. Even...
Topics: Operations research, Problem solving., Set partitioning problem, constraint branch and bound...
Since 1953 there has been a fierce military competition between the Republic of Korea (ROK) and the Democratic People's Republic of Korea (DPRK). The DPRK has committed over 10% of its GNP since 1963 to defense expenditures, whereas, the ROK has spent a relatively small portion (3-6%) of GNP over the same period. Because the U.S. plans to withdraw from the ROK in the near future, a heavy burden will be imposed upon the South Korean government to maintain its national defense. The U.S....
Topics: Balance of power, Armed Forces, Appropriations and expenditures, Dissertations, Academic., Korea,...
Naval Postgraduate School
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The Sea Launch and Recovery Space Transportation System is envisioned as a means of achieving not only more effective but lower cost space operations. The development of a cost estimation model is important in determining the feasibility of this system. The purpose of this thesis is to provide a cornerstone for the design of such a cost estimation model. The model presented here can be used to compute the minimum cost per mission as a function of selected design variables. The particular...
Topics: Transportation systems., Optimization
The Assistant Director for Community Family Activities (DCFA) at Fort Ord Army Base requested a cost - benefit analysis to determine if the Services Division of CFA should establish a warehouse operation. This study determined the feasibility of standardizing certain non-perishable products procured with Non Appropriated Fund (NAF) resources, buying them in bulk and issuing them through a new warehouse facility. The analysis of available data indicates that it is not economically justifiable to...
Topics: Cost effectiveness., Standardization, centralization of ordering, economic order quantities,...
Naval Postgraduate School
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The Administrative Sciences (AS) Department of the Naval Postgraduate School (NPS) is placing an increasing emphasis on keeping departmental expenses at minimum levels requiring the AS Department to carefully monitor a large number of complex financial accounts. It becomes necessary to develop a Financial Management Information System that would result in improved management of financial assets, better use of clerical skills, and more detailed, accurate, and up-to-date reporting within the AS...
Topics: Management, Finance, Economics., Financial Management Information System, DBase IV, Data-Based...
Naval Postgraduate School
by McKenzie, Robert Hugh, III
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A proof-of-concept experimental validation of a proposed idea for encoding spatial images using masks with patterns based on a set of orthogonal Walsh functions was conducted. Simple images were encoded via a multiplexing technique, and computer algorithms were developed to decode and to display the results. Photographs of the re-constructed images offer incontestable proof of the validity of this hypothesis for multiplexed imaging. Further research of this technology is expected to lead to...
Topics: Multiplexing, Spectrum analysis, Walsh functions, Sequency theory, Engineering, Spectroscopy, Walsh...
A high resolution, 20-level, primitive equation (PE) model of the California coastal region is initialized using temperature data acquired during the first California Transition Zone (CTZ) cruise from 6 to 12 July 1988 for the purpose of diagnosing the three-dimensional dynamically balanced flow field for the region. The major feature in the region during the cruise period was a strong meandering jet which flowed equatorward and offshore, oriented in a northeast to southwest direction. The...
Topics: Ocean currents., Diagnostic model, California Current, CTZ, dynamical modes
Naval Postgraduate School
by Wilson, Robert Eric
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This thesis is a continuation of research initiated by LCDR Daniel Ryan, SC, USN to establish a basis for defining words and terms used in the field of contracting. The twenty terms selected for this thesis were synthesized from collected definitions, Government regulations and contracting literature and reviewed once by National Contract Management Association Fellows in previous research efforts. This work differs from previous research in that it takes the terms from those efforts which...
Topics: Management, Contracts, Encyclopedias and dictionaries., Acquisition and Contracting Term...
Naval Postgraduate School
by Robinson, Michael W.
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This thesis is a continuation of research initiated by Lieutenant Commander Daniel F. Ryan, SC, USN to establish a basis for defining words and terms used in the field of contracting. Concurrent research in this area is being conducted by students at the Naval Postgraduate School, Monterey, CA and the Air Force Institute of Technology, Wright-Patterson Air Force Base, Dayton, OH. The twenty five terms selected were taken from a master list of contracting terms developed by previous researchers....
Topics: Management, Business, Vocabulary., Acquisition, contracting, procurement
Naval Postgraduate School
by Hwang, J.S.
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A study of the shielded coplanar line (SCPL) is presented. The main goal of this theses is to develop an equivalent circuit model for a typical discontinuity in the SCPL. The formulation is based on Galerkin's method, using Green's function applied in the Fourier transform domain. The impedance (Z sub 0) has been calculated by using a variational method. The propagation constant (betaomega) and effective dielectric constant of the SCPL have been calculated by using a method of moments. The...
Topics: Boundary value problems., A discontinuity study in shielded coplanar line
A water tunnel flow visualization investigation was performed into the high angle of attach aerodynamics of a 2% scale model of the F/A-18 fighter aircraft. The main focus of this study was the effect of pitch rate on the development and bursting of vortices generated from the leading edge extensions in the high angle of attack range with and without yaw. Results of this investigation indicate that that the vortex bursting point (relative to the static case) moves rearward with increasing...
Topics: High angle of attack aerodynamics, effect of pitch rate and yaw, vortex development and bursting,...
Naval Postgraduate School
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On March 23, 1983, then-President Ronald Reagan challenged a group of engineers and scientists to make nuclear weapons impotent and obsolete. This challenge led to the beginning of a new era in space technology and strategic defense, thus creating the Strategic Defense Initiative (SDI), better known as Star Wars. By 1984, several studies had begun to show that software in conjunction with Battle Management/Command, Control, and Communications techniques would play a major role in determining...
Topics: Strategic Defense Initiative, Computer programs, Strategic defense initiative (SDI), Reliability,...
Naval Postgraduate School
by Hawkins, Michael L.
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This thesis presents several derivations of Snell's Law of Refraction and one of the principle of reflection. In all of these, we place different constraints upon the problem and produce the familiar laws governing reflection and refraction. The main result of this research is the expression found for Snell's Law of Refraction in which the velocity of the light particles in the medium depends upon direction. We also use inverse problems to find the index of refraction needed to move along any...
Topics: Refraction., Snell's Law, Refraction, Reflection, Fermat's Principle
Naval Postgraduate School
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An antenna engineering handbook and database program has been constructed by engineers at the Lawrence Livermore National Laboratory (LLNL) using the Numerical Electromagnetics Code (NEC) antenna modeling program to prepare data performance on tactical field communication antennas used by the Army. It is desirable to have this information installed on a personnel computer (PC), using relational database techniques to select antennas based on performance criteria. This thesis obtains and...
Topics: Antennas (Electronics), Computer Simulation, Numerical Electromagnetics Code (NEC), Tactical HF...
Naval Postgraduate School
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Combat models often involve target detection times which may vary with different observers due to characteristics of personnel, or detection systems. They may also be affected by different environmental factors such as visual levels, sea states, terrains, etc. There is often interest in quantifying the effects of different observer characteristics and environmental factors on detection times. A hierarchical gammaWeibull regression model is considered which can incorporate observer...
Topics: Regression analysis, Discrimination, Random variables., Maximum Likelihood Estimate, Gamma/Weibull...
Naval Postgraduate School
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The primary objective of this thesis is to perform a cost effectiveness analysis of the various purchasing methods available to Dudley Knox Library on the Naval Postgraduate School campus in Monterey, California. The intent of the study is to identify the most cost efficient method of procuring books within the guidelines of the Federal Acquisition Regulation (FAR). The research was conducted by reviewing current literature and interviewing persons acquainted with the various cost elements...
Topics: Purchasing, Finance., Library, purchasing, cost study
This thesis investigates the extent to which the Contractor Risk Assessment Guide (CRAG) Program at General Dynamics in San Diego, California, is achieving the goal of improved Department of Defense oversight processes and more effective contractor internal control systems. The study describes the development, reviews the basic audit procedures, and examines the five chapters of the CRAG Program. The research demonstrates that reduced duplication of effort was attained at General Dynamics' San...
Topics: Management, Industrial relations, Organization., CRAG, Contractor Risk Assessment Guide,...
(U) This thesis documents the methodology and parameters used in designing a manpower planning model using the GradeTime-in-Grade model for controlling the composition of Indonesian Army officers. This model of a manpower system consists of a two-dimensional state space Markov Model with special structure. The model provides manpower planners with the capability of testing alternative policies and adjusting model parameters to improve the use of personnel resources that are from three sources...
Topics: Operations research, Manpower, The GradeTime-in-Grade Model, APL Prgrams, Applications
The Pseudo Wigner Ville Distribution is a time frequency representation of an input time signal and is ideally suited for portraying non-stationary signals. A working computer program is presented and the effect of preprocessing and postprocessing data manipulations is shown. The program has been developed for analyzing data for use in machinery condition monitoring diagnostics and will be valuable asset for analyzing transient machinery. A practical example showing pump speed variations with...
Topics: Mechanical engineering, Time-signals, Machinery, Monitoring., Machinery monitoring, transient,...
Naval Postgraduate School
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A database management system (DBMS) can have numerous errors and inconsistencies in its data. Examples of errors and inconsistencies that may be contained in a DBMS are: Referential integrity violations, logical inconsistencies, redundancies and out-of-range values. During a conversion of database management systems, the errors and inconsistencies in the source system must be corrected so the data entered into the new target DBMS will be accurate. The goal of this thesis is to examine a source...
Topics: Databases, Errors., Database Conversion, Integrity Constraints, Errors, Inconsistencies, DBMS
Testability issues concerning the need for including Design for Testability (DFT) techniques in VLSI (Very Large Scale Integration) designs are discussed. Types of fault models, the use of fault simulation and the DFT techniques of Scan Path and Built in Test are described. An engineering methodology that uses the Genesil Silicon Compiler to produce a VLSI design, DFT-CHIP, which utilizes the DFT Scan Path technique is presented. Included are the procedures for using Genesil's simulation,...
Topics: Electrical engineering, Computer-aided design., Design for testability, VLSI, Genesil Silicon...
Naval Postgraduate School
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Considerations of real-time control problems for an Autonomous Underwater Vehicle (AUV) are addressed in this research. Among these problems is the ability to control the submersible given its highly nonlinear operation environment. In order to account for these variations, robust control techniques must be used. In particular, Variable Structure Control (VSC) with Doyle-Stein Observer has proven to produce optimal results while maintaining a high degree of robustness. This led to the...
Topic: Submersibles.
Unmanned vehicle technology has matured significantly over the last two decades. This is evidenced by its widespread use in industrial and military applications ranging from deep-ocean exploration to anti-submarine warefare. Indeed, the feasiblity of short-range, special-purpose vehicles (whether aunonomous or remotely operated) is no longer in question. The research efforts have now begun to shift their focus on development of reliable, longer-range, high-endurance and fully autonomous...
Naval Postgraduate School
by Dampier, David Anthony
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As hardware complexity increases, software complexity increases, and software systems become less maintainable by manual methods. Automated software development methods, like Rapid Prototyping, have served to increase the maintainability of modern software systems, and increase customer participation in the requirements definition process. This makes software systems more maintainable and increases customer satisfaction with the first version of the system. Still, changes are inevitable. The...
Topics: Computer software,Development, Rapid prototyping., Rapid prototyping, models, programming...
Naval Postgraduate School
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Speed and propulsion fuel consumption characteristics of United States aircraft carriers are modeled to determine how unpredictabilities in operational, engineering, and wartime environments affect the endurance capability of the ship. Research into the characteristics of steam propulsion plants on ships show that variability may exist in the amount of propulsion fuel required to support ship operation for a given period of time. Sources if this variability include the nonlinear transformation...
Topics: Operations research, Logistics, Naval, Energy consumption, Fuel consumption, POL, Aircraft carrier,...
Naval Postgraduate School
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The maintenance of large military software systems is complex, involves users as well as software professionals, and requires appropriate management, which is one of the most important factors in efficient maintenance. Maintenance management requires information about the current state of the maintenance process that should be organized within a maintenance-oriented Enginering Database. This database should include all the necessary data about software changes, system configeration, maintenance...
Naval Postgraduate School
by Hatzopoulos, Epaminondas A.
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This report develops a modern naval combat model. It deals with naval surface missile combat and models the attrition as a force-on-force process described in discrete time steps, or slaves. The degradation of each force is expressed in terms of remaining staying power and combat power in both opponents. It is based on Lt. Beall's model, but since it deals with missile warfare it incorporates several human factors that affect the outcome of a naval battle: specifically scouting effectiveness,...
Topics: Naval art and science, Mathematical models, Naval battles, Naval tactics, War, Maritime...
Naval Postgraduate School
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Organizational Maintenance Activities (OMAs) within the Naval Aviation Maintenance organization do not have an adequate information system (IS). This seriously degrades their ability to efficiently and effectively manage their aircraft, equipment, and personnel. Information systems to support both Naval Air Systems Command (NAVAIR) and the operational chain of command include Naval Aviation Depot Information System (NADIS), Naval Air Logistics Data Analysis (NALDA), and Naval Aviation Logistics...
Topics: Computer networks., Information systems, aviation maintenance, expert systems
It is common to have a hierarchical communication network in a military environment. If we consider each node in the network as a computer site then we have hierarchical computer network. In a hierarchical computer network, because the need of resource sharing, we now have a distributed processing system. In this system a parent node may have duplicate records of all its children. Any update of a record has to be reflected in other nodes that keep the duplicates. We need a concurrency control...
Topics: Computer networks, Electronic data processing., Concurrency control, hierarchical computer network
Naval Postgraduate School
by Sagovac, Christopher Patrick
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The main problem of artificial satellite theory is a restricted two body problem in which the Legendre Polynomial representation of the cylindrically symmetric potential contains only the first two terms. A generalized asymptotic expansion is used to obtain a first order approximation. The solution at the critical inclination is seen to be of a different type than at other inclinations. The solution is finite for all eccentricities and inclinations when suitably restricted in time.
Topics: Artificial satellites, Problem solving., Main problem, artificial satellite, restricted two body...
Naval Postgraduate School
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To implement an IIR notch filter is theoretically feasible but not technically verified or validated. Two methods often used to speed up a computation are multiprocessing and pipelining. In designing a notch filter the pipelining technique is the natural choice to speed up its processing speed. To have a rapid prototype design we may employ the silicon compiler techniques and explore numerous design variations before sending for fabrication. This paper will report the alternative pipelined...
Topics: IIR, Notch filter, Pipeline, CMOS, Silicon compiler, One's complement, Two's complement
This thesis examines the practicability of developing a standard, stand-alone, computerized contract pricing model for contract pricing and negotiations. A functional description of a proposed framework for a standard, stand-alone. computerized contract pricing model is provided. The results of data collected from a survey of DLA, Navy, and Marine Corps field contracting activities are examined and the practicability of developing such a model is analyzed.
Topics: Finance, Mathematical models, Computer simulation, Pricing model, contract pricing and negotiations
Naval Postgraduate School
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This research effort explore the merit of developing a procurement policy manual for purchasing organizations within the Navy Field Contracting System (NFCS). The structure, content, uses, advantages, and methods for evaluating effectiveness found in the literature, as well as the generic characteristics of a procurement policy manual, are identified and discussed. These properties are then applied to Navy purchasing manuals and questionnaires received from participating contracting activities...
Topics: Management, Logistics, Organization., Contracting, Contract Research, Contract Management,...
Naval Postgraduate School
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Quality Assurance (QA) is a critical factor in the development of successful software systems. Through the use of various QA tools, project managers can ensure that a desired level of performance and reliability is built into the system. However, these tools are not without cost. Project managers must weight all QA costs and benefits for each development environment before weigh all QA costs and benefits for each development environment before establishing an allocation strategy. The...
Topics: Computer programming,Software, Expert systems (Computer science), Expert system, simulation model
This thesis analyzes the organization and conduct of the Procurement Management Review (PMR) program within the Marine Corps Field Contracting System. An attempt is made to identify, to the maximum extent possible, the goals, management philosophy, organization, and methods considered to be ideal for PMR by three sources: literature, previous studies, and contracting professionals. An analysis and comparison between this consensus and HQMC's current PMR policies and procedures, as well as field...
Topics: Armed Forces, Procurement., Procurement management review (PMR), contract management review
This thesis examines a proposal to index the Federal procurement small purchase thresholds. The indexation mechanism within the Congressional legislative process and the indexing mechanism used by the North Atlantic Treaty Organization to adjust procurement thresholds are examined. An index is selected and an appropriate indexing mechanism is developed. The indexing proposals viability is tested using the analytical framework proposed by R. Kent Weaver in Automatic Government: The Politics of...
Topics: Government purchasing, Law and legislation, United States., Small purchase Thresholds
The current Automatic Digital Network (AUTODIN) communications system provides excellent message communications service within the Defense Communications System. However, AUTODIN speed of service objectives end at the Telecommunications Center (TCC). This gap between AUTODIN and end-user organizations causes delays and frustration to users who expect minimal delay in writer-to-reader message service. The Defense Message System (DMS) promises to deliver true writer-to-reader message service by...
Topics: Defense Message System, Naval message, computer networking
Naval Postgraduate School
by Whitaker, Michael J.
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In accordance with the 1988 Army Aviation Modernization Plan, the Army entered contractual agreement to begin acquisition of 2,253 UH-60 utility helicopters to replace approximately two-thirds of the 3,147 UH-1 aircraft destined for retirement. The plan foresaw the newer aircraft assuming the majority of the utility mission with the residual balance of UH-1 helicopters assuming a supplementary role. Because of subsequent budgetary considerations, the decision was reached to stop purchasing...
Topics: Operations research., semi-Markov, helicopter, Army Aviation Modernization Plan
Naval Postgraduate School
by Jurewicz, Thomas A.
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The NPS Autonomous Underwater Vehicle Simulator is a joint project between the Naval Postgraduate School's Mechanical Engineering and Computer Science Departments. In order to test mission planning and execution software, an accurate vehicle dynamic model is required. Using dynamics based upon the Navy's Swimmer Delivery Vehicle (SDV), there is a need to continually update the hydrodynamic coefficients based upon actual vehicle-in-water testing. The NPS AUV Dynamic Simulator contains a full set...
Topics: Computer science, Submersibles, Hydrodynamics, Computer programs., Graphics, Dynamics, Real Time,...
Naval Postgraduate School
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This thesis presents an analysis of the performance of a local mobile radio communications system utilizing the Aloha random access protocol with variable length packets. The capture phenomenon due to the nearfar effect that enhances the performance of the system is investigated. A tagged packet will capture the base station if its signal-to-interference ratio exceeds a threshold gamma sub zero. Because of the nearfar effect, users near the base station typically have a stronger signal than...
Topics: Mobile communication systems, Signal processing., A ring model for localmobile radio...
Naval Postgraduate School
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This thesis examines the feasibility of using an expert system approach to design an intelligent Weapon Suggestion System (WSS) to assist the Weapons Department Head (WDH) on board a naval warship in making accurate and efficient decisions in critical battle situations. We have analyzed the constraints of a WSS and the performance of on board weapons. We have also reviewed the related material previously published and discussed the implementation environment in this thesis. The system is...
Topics: Weapons systems, Evaluation, Systems engineering.
Developing large hard-real-time systems in a traditional way usually creates inconsistencies among the user's needs, the requirements and the implementation. Rapid Prototyping by using Prototype System Description Language (PSDL) and Computer Aided Prototyping System (CAPS) minimizes the time and resource costs, and maximizes reliability. In this technique, designer builds the prototype with the initial requirements, and the user evaluates the actual behavior of the prototype against its...
Topics: ADA, C_x001B_p3_x001B_sI systems, Command and control systems., Computer aided prototyping,...
Naval Postgraduate School
by Charbonneau, Lauren J.
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In this thesis a formal description technique, systems of communicating machines, is used to specify and analyze a token bus protocol. A simplified description of the protocol is given, and proofs of certain correctness properties presented. The analysis proves that the protocol is free from deadlocks and non executable transitions, and also that successful message transfer is guaranteed for a network with an arbitrary number of machines. A program written in an object oriented language, C++,...
Topics: Computer network protocols,Standards,United States, Local area networks (Computer networks), Token...
Naval Postgraduate School
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This thesis examines the possible effects of foreign acquisition on the defense industrial base in the semiconductor industry. The problems and benefits of foreign acquisition are assessed in order to determine the consequence of foreign acquisition for industries critical to U.S. national security. Foreign investment in these critical areas has the attention of top officials in the legislative and executive branch, as evidenced by the passage of the Exon-Florio amendment. This legislation was...
Topics: National security, Economics., Foreign investment, industrial base
Naval Postgraduate School
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High frequency (HF) ionospheric propagation predictions have been available on mainframe computers since the late 1960s. Since the advent of low cost, computationally powerful personnel computers, several propagation codes have been ported from mainframes to PC's. This study compares results from two versions of the IONCAP and PROPHET HF propagation prediction codes to a database of measured electric field strengths. IONCAP-PC 2.5 predictions were compared to IONCAP-VAX 85.04 predictions and to...
Topics: Microcomputers., High Frequency (HF), Ionospheric Propagation
This thesis research focused on the identification and characterization of the barriers which impede institutionalization of Total Quality Management (TQM) concepts in the Department of Defense (DoD) acquisition system. Barriers were identified and characterized by survey of public and private sector individuals knowledgeable about TQM and experienced in the DoD acquisition system. The quality philosophy described by DR. W. Edwards Deming was the primary foundation for analysis. Although many...
Topics: DoD Acquisition System, Management., Total quality management, barriers
Naval Postgraduate School
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This thesis is a study of the Naval Military Personnel Command (NMPC) and its requirements to interconnect office area/local area networks and mainframe resources to form a comprehensive, organization-wide internet. The paper serves three purposes: it examines NMPC's organizational environment and internet requirements, proposes alternative internet configurations and recommendations, and uses information systems management lessons learned in studying NMPC to make internet planning...
Topics: Internetwork connectivity, Local Area Networks, Naval Military Personnel Command, OSI Model, IEEE...
U.S. Foreign Military Sales to ROC in Taiwan have always been a controversial matter, and the United States has often yielded to the pressure from Communist China. The Taiwan Relations Act was designed by Congress to provide adequate safeguards for the well-being of Taiwan. But the law is too flexible for implementation to be effective, and effectiveness seems to rest largely on the good faith of the executive office. The strategic location of Taiwan has great significance for U.S. strategic...
Topics: Arms transfers,United States, Military assistance, American,Taiwan, Technology transfer.,...
Naval Postgraduate School
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This thesis deals with a simulation of a missile versus target engagement scenario. After driving simplified transfer functions for the missile seeker head, missile autopilot, missile dynamics, and target dynamics, a three dimensional simulation is developed using classical proportional navigation. The scenario is simulated using state variable design. A forward time solution of the two dimensional problem is developed which is converted to an adjoint model. The adjoint model is used to...
Topics: Guided missiles, Transfer functions, Dynamics, Time, Proportional navigation, Antiaircraft...
Naval Postgraduate School
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This thesis is an attempt to develop a taxonomical structure to use in the classification of the goods purchased by the Federal Government. The primary objective was to develop a usable scheme that practitioners could employ in classifying goods along a continuum from simple to complex. A secondary objective of this thesis was to determine the characteristics of the goods, other than their obvious physical differences, to utilize in classifying. Using 21 randomly selected heterogeneous goods...
Topics: Surveys, Cluster analysis., Government Goods Taxonomy, Taxonomy, Classification System for...
Naval Postgraduate School
by Schwartz, Thomas Joseph
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Planning land combat operations requires a method of evaluation to determine the strengths and weaknesses of the various possible courses of action. The principal means of evaluating these courses of action is wargaming. Some research indicates that planning efforts lack a coherent set of wargaming rules and principles that are widely accepted and understood by military professionals. This thesis develops a theory of combat for use by military professionals in the planning of land combat. The...
Topics: Operations research, War games, Modeling., Land warfare, military planning, military science,...
Naval Postgraduate School
by Dunlap, Susan L
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Current methods of developing user interfaces for IRIS workstation application programs are inefficient. In order to help speed the development of complex graphics programs, IRIS workstation users need a toolkit that will assist in the design and implementation of user interfaces for graphics programs. This project presents the preliminary work on an interface generator for the Silicon Graphics, Inc. IRIS workstation. The NPS Interface Builder (NPS IB) is designed to speed the creation of...
Topics: Interface, graphics, User interfaces (Computer systems), Computer software, Human-computer...
Naval Postgraduate School
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The issue of model validation is critical in the formulation and interpretation of mathematical programming models, yet this problem is largely ignored by contemporary modeling languages and the systems they support. This research advanced modeling languages for mathematical programming by providing a formalism and defining a language for specifying a dimensional complement, called typing, to the algebraic representation of models. Typing is a formal specification used to determine...
Topics: Mathematical models, Calculus, Data types, integrated modeling, linear programming, model...
Naval Postgraduate School
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A material that behaves likes a glassy ablator on the surface, has a low thermal conductivity, is structurally tough, lightweight, and is in some sense reusable, would be desirable for the protective heat shield used on Earth entry vehicles. A material for this purpose has been developed that uses silicon dioxide (fused quartz) in a fibrous packed matrix, forming blocks which can behave as a glassy ablator on the surface when subject to very high surface heat fluxes. These fibrous silicon...
Topics: Space vehicles, Atmospheric entry, Mars (Planet), Ablative materials, Shielding (Heat), Ablative,...
Naval Postgraduate School
by Jacunski, Walter W.
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Department of Defense has mandated that TQM be implemented in procurement. This research looks at achieving quality in procurement through the use of information systems. In doing so, it defines what quality in procurement means. The armed services; three automated systems: APADE, BCAS, and SAACONS are analyzed to see what tools they provide users to aid them in achieving procurement quality. It gives suggestions on how information systems could better be used to attain procurement quality.
Topics: Quality control, Armed Forces, Procurement, Management, Automation, Total quality management.,...
Naval Postgraduate School
by Lekey, Rodrick William
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In combat situations, a fighter pilot must deal with a large number of input variables and decision alternatives in a very short time. To have the greatest chance of success in an encounter, the pilot must have a viable game plan in mind before he engages with an enemy aircraft. This game plan comes about through many hours of expert training in various scenarios of actual and hypothetical situations. This study describes the design and implementation of a prototype expert database training...
Topics: Air warfare., Expert system, expert database, air combat maneuvering
Naval Postgraduate School
by Smith, Wallace Dean, Jr.
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The E-2C Hawkeye, a U.S. Navy aircraft, has experienced problems with fatigue cracks in its wings. This problem was studied in the laboratory using a representative specimen under simulated flight loading. Acoustic emission monitoring was used to detect the stress pulses emitted during cracking. A new wave analysis technique was applied in order to distinguish extraneous noise from crack growth. This technique distinguishes between the extensional and flexural waves in thin aluminum plates....
Topics: Engineering, Science, Aluminum, Fatigue., aircraft fatigue, aging aircraft, crack growth, 7075...
Naval Postgraduate School
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In December 1988, a tomographic signal transmission test was conducted in order to test the feasibility of tomographic analysis in a region of complex bathymetry. The transmission test was conducted in the Monterey Bay where the signals propagated from deep water to shallow, continental shelf water. In order to use the inverse techniques to infer the ocean processes affecting the acoustic propagation, the propagation paths of the tomographic signal between the transmitter and receivers must be...
Topics: Tomography, Sound, Transmission, Underwater acoustics., Acoustic tomography, acoustic modeling,...
In a computer simulation experiment, acoustic tomography is assessed as a means of measuring the seasonal flux of heat advected by the Norwegian Atlantic Current. Oceanic heat flux has traditionally been measured by various direct or indirect techniques that are prone to error or large uncertainty. The tomographic technique offers distinct advantages over conventional methods in that temperature and current fields, that combine to yield heat flux in the ocean, can be determined at various...
Naval Postgraduate School
by Haupt, Kevin Paul
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Military system acquisition management decisions can be both untimely and uninformed, according to the author, due to the adverse effects of communication breakdown and filtering of information. An acquisition group decision support system (AGDSS), defined in this thesis, seeks to maintain acquisition team integrity and provides the necessary information processing capacity to mitigate the impact of these effects. The combination of such key technologies as local area networks, word processing,...
Topics: Decision support systems, Armed Forces, Procurement, Decision making., Acquisition, Group Decision...
Naval Postgraduate School
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A symmetrical airfoil at fixed angle of attack from 0 to 35 degrees was placed in an air flow with controlled velocity oscillations at 10 Hz. The instantaneous pressure distribution and flow velocity were measured simultaneously. Pressure information was integrated numerically to determine instantaneous values for lift, drag and moment about the quarter chord. The results were plotted as three-dimensional surface plots in angle of attack, cycle time and performance coefficient axes, or with...
Topics: Cycles., Oscillating flow, aerodynamic coefficients, symmetrical airfoil
Naval Postgraduate School
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Estimation of regional distributions of qualified military available (QMA) population is essential for determining an efficient allocation of recruiting resources. Estimates of regional mental ability distribution are required in order to estimate QMA. Using data from the Youth National Longitudinal Survey (NLSY), logit regression equations are used to estimate the probability that a 17 to 21 year old high school graduate will score above the 50th percentile on the Armed Forces Qualification...
Topics: Qualified Military Available, AFQT score estimation, high quality recruit market
The objective of this work is to outline rules for the implementation of Electronic Warfare Reprogramming Libraries (EWRL) in the Brazilian Air Force (FAB). First, a brief description of the structure and functions of the relevant branches of Brazilian Air Force will be presented. Second, why having a reprogramming process for airborne RADAR WARNING RECEIVERS (RWR) THREAT LIBRARIES is important at the current stage of EW development within the Brazilian Air Force. Third, based on the U.S....
Topics: Electronics in military engineering, Computer programming, Threats., Radar warming receivers, user...
Naval Postgraduate School
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A performance comparison and tradeoff study was conducted between eight unique aircraft configurations for high performance light aircraft and remotely piloted vehicles. These configurations included conventional tractor, conventional pusher, canard, tandem-wing, joined-wing, and 3-surface designs, which were analyzed though the use of microcomputer-based performance and lattice-vortex programs. Actual experimental aircraft were utilized as models which were scaled to a useful load of 600...
Topics: Microcomputers, Aircraft design, remotely piloted vehicle, RPV, configuration, experimental aircraft
This paper describes aircraft observations made with the NOAA P-3 research aircraft on 24 March 1989. The measurement region was over the marginal ice zone, southeast of Spitzbergen, between 74 to 76 degs N and 19 to 27 degs E. Above the atmospheric boundary layer, the geostrophic wind was 12 ms at approximately 15 deg off-ice. A well mixed layer extended along the entire 200 km flight path which was perpendicular to and centered over the ice edge. There was a stratocumulus layer over the ocean...
Topics: Boundary layer (Meteorology), Marine meteorology., Marginal ice zone
Naval Postgraduate School
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The necessity for well-defined, integrated information systems (IS), driven by today's dwindling human, financial, and management resources, makes it essential to plan effectively. This can only be achieved by linking IS planning to the overall strategic plan of the organization. Department of the Navy (DON) IS planning has historically missed the mark in this report. Information Engineering, automated through Computer Aided Software Engineering (CASE) technology, offers significant benefits...
Topics: Management, Engineering, Computer programs, Computer-aided design., Strategic Information System...
Naval Postgraduate School
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This thesis is a geotechnical engineering report which includes a topographical profile at three propitious locations across the American continent for the construction of an interoceanic passage between the Atlantic and Pacific oceans. Surficial soils as well as the general topography of the centerline of the alignments were investigated to the extent possible and an attempt was made to investigate underlying strata. Some information is illustrated graphically to allow an appreciation of the...
Legislators, recognizing the need to increase the national savings rate, have introduced profit-sharing and thrift savings plans to civilians, but have not included the military. This thesis examines the need for and the costs and benefits of an employer-sponsored savings plan for active duty military personnel. It concludes that it is both feasible and cost-effective to tailor tax-sheltered annuities (TSA's) currently available to nonprofit organizations to the military compensation system. It...
Topics: Compensation, Economics, Pay, Pensions., Retention, Retirement, Savings, Soldiers
Naval Postgraduate School
by Kawakami, Tetsuichi
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An integer programming approach is taken to schedule daily training flights in a Japanese operational flight squadron and an American flight training squadron. Two related models for the Japan Maritime Self-Defense Force (JMSDF) are considered for pilots just out of the training pipeline and for fully qualified pilots. Explicit measures of effectiveness that update pilot currency are used, while instructor and aircraft availabilities create resource restrictions. The models are implemented in...
Topics: Computer programming, Software., Military Application, Linear-Integer Programming
Naval Postgraduate School
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This paper examines the Semtner/Chervin global ocean model in the tropical Indian Ocean. The primitive equation, eddy-resolving model covers a domain from 75 deg S to 65 deg N at a horizontal resolution of 1/2 deg, with 20 vertical levels. In a new phase of an ongoing simulation, the wind stress has been changed from annual mean wind forcing to seasonal forcing, using the Hellerman/Rosenstein (1983) wind stress. The model is shown to reproduce the seasonal features of the Indian Ocean...
Topics: Meteorology, Oceanography, Oceanographic Numerical Modeling, Indian Ocean, Ocean General...
Repairables are components andor sub assemblies which can be repaired if they become unserviceable. Repairables are typically high cost, long procurement leadtime items. Because of these characteristics, significant economies can be achieved by repairing these items rather than discarding them when they become unserviceable. Historically, these carcasses have been difficult to manage because, when they broke, maintenance personnel were primarily concerned with replacing them with...
Topics: Management, Decision making, Cost effectiveness., ATAC (Advanced Traceability and Control), Carcass...
Interoperability of commercial Land Mobile Radios (LMR) and the military's tactical LMR is highly desirable if the U.S. government is to respond effectively in a national emergency or in a joint military operation. This ability to talk securely and immediately across agency and military service boundaries is often overlooked. One way to ensure interoperability is to develop and promote federal communication standards (FS). This thesis surveys one ares of the proposed FS 1024 for LMRs; namely,...
Topics: Communications, Military, Computer programming., Land Mobile Radio (LMR), Federal Standard (FS),...
Naval Postgraduate School
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MLAYER, a computer program, was developed by the Naval Ocean Systems Center (NOSC) for calculating the signal levels of electromagnetic waves propagating in a multilayer tropospheric waveguide environment over seawater. The program is an extension of the XWVG which is a trilinear ducting program. Modifications of the XWVG were carried out to handle multilayer tropospheric ducts. A number of modifications and improvements on the program made over the past several years were not documented. A...
Topics: Tropospheric duct propagation, Computer program documentation
Naval Postgraduate School
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This thesis identifies and analyzes labor market, economic, demographic, and geopolitical factors and trends which are believed to be important to officer accessions. A basic officer supply model is derived from an occupational choice model. The study specifies three different measures of officer supply: applications, new contracts, and accessions. Log-linear regression models using these three dependent variables are then estimated with ordinary least squares techniques. A basic hypothesis was...
Topics: Armed Forces,Officers, Armed Forces,Officers,Recruiting, Sailors., Officer supply models,...
Naval Postgraduate School
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This study examines the goaling models used by the Navy Recruiting Command for the Nurse Corps and Nuclear Propulsion Officer Candidate (NUPOC) programs. These two programs serve as representative samples for the numerous officer recruitment programs administered by the Navy Recruiting Command. The intent of the study is to analyze and validate the accuracy of the current goaling models, to ascertain factors which could improve the accuracy of the models, and to make recommendations for...
Topics: Nurses, Dissertations, Academic., NUPOC, Nurse Corps Recruiting, NUPOC Recruiting, Navy Recruiting...
Naval Postgraduate School
by Barrera, John Thomas; Maldonado, Ronald V.
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The purpose of this study is to describe the public private venture programs that are available to the Department of Defense to reduce the present family housing shortage. This study involved the following: (1) Description of the Military Construction Process; (2) Analysis of the problems associated with the military construction process; and (3) Provide a detailed explanation of the publicprivate venture programs along with a description of how to initiate the programs at the base commander...
Topics: Families of military personnel, Housing, United States, Military dependents, Public-private sector...
Since 1977 the use of umbrella-type Base Operating Support Contracts (BOSCs) at Naval installations has increased dramatically. These contracts encompass a number of services for which reimbursements are received. However, little guidance from headquarters has been issued on financial management of this type of contract. Naval Submarine Base (NSB) Bangor was one of the first installations to use a BOSC and is seeking improvements in the financial management areas of allocating the fixed...
Topics: Management, Economics, Contracting
The increasing complexity of our every day jobs requires us to pursue flexible and more adaptive technologies with which to respond to our professional requirements. One such method is an expert system. This computer software "tool" is one means to augment and streamline ones professional decision making process. The expert system can be utilized as a means to assist new or inexperienced personnel to make informed decisions about their jobs. It can also assist in the decision making...
Topics: Management, Cybernetics, Artificial intelligence., Expert Systems, Acquisition, Procurement...